SyntaxError: missing ) after argument list - node.js

Question

I know this is obvious. I just can't see it.
This is part of a node/express app..
'use strict';
var express = require('express');
var controller = require('./iresize.controller');
var router = express.Router();
router.post('/', controller.send);
module.exports = router;
Which leads to..
SyntaxError: missing ) after argument list
at (/Code/server/iresize/index.js:4:18)
i.e. var controller = require('./iresize.controller');
I don't get it. I have lots of other routes and controllers that look exactly the same. I'm not sure why this one isn't working..
Note: I have cut down the error output for clarity. There is routes.js calling it like so...
app.use('/r', require('./iresize'));
and then in iresize dir I have index.js and resize.controller files..
The full error output is as so:
node server/app.js
[Error: Module version mismatch. Expected 46, got 14.]
js-bson: Failed to load c++ bson extension, using pure JS version
SyntaxError: missing ) after argument list
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:413:25)
at Object.Module._extensions..js (module.js:452:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function._load (/Code/node_modules/pmx/lib/transaction.js:62:21)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/Code/server/iresize/index.js:4:18)
at Module._compile (module.js:434:26)
at Object.Module._extensions..js (module.js:452:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function._load (/Code/node_modules/pmx/lib/transaction.js:62:21)
at Module.require (module.js:365:17)
at require (module.js:384:17)
NB: One of the Exceptions is at this file. However if I remove the app.use.. line above everything works fine.